Tubular and Finned Tubular Heaters

Heatrex Tubular and Finned Tubular Heaters provide a highly efficient, reliable and low cost means of rapidly supplying heat directly to air, metals and various types of liquids, depending on the application. UL and CSA Many Heatrex Tubular elements are recognized by Underwriters Laboratory (UL) and certified by the Canadian Standard Association (CSA). Construction Nickel-chromium resistance wire is uniformly stretched and imbedded into magnesium-oxide powder Resistance wire is accurately centered within a copper, steel or alloy sheath. Terminals are inserted into the heating coil, and welded. Threaded terminal pin with hardware

Sheath Diameters: .250/.260, .315, .375, .430, .440, .475, .490, .625
Sheath Materials: Copper, Copper Clad Steel, Stainless Steel, Incoloy, Specials Available

Benefits and Optional Features

• Element can be formed into almost any shape.
• Other wattage/voltage combinations are available.
• Various terminal configurations available.
• Resistance welded terminals assure a strong mechanical and electrical joint.
• Coil is sealed into position which eliminates "hot spots" and produces a long life element with efficient heat transfer and positive electrical insulation.
• Available in a wide range of wattage/voltages, watt densities, overall lengths, heated lengths, diameters and sheath materials.

Heatrex Tubular and Finned Tubular Heaters may be clamped against or set into a surface; immersed into liquids, molten salts or soft metal; used to heat air in ducts or ovens; or cast in aluminum, lead, concrete or cast iron.

Finned Tubular Heaters

Heatrex Finned Tubular Heaters are used for natural or forced convection space heating and industrial process air heating. Sheath temperatures are suitable for drying, heat treating, annealing, curing in ovens or dryers and air heating in ducts.

Construction

• Copper clad steel tubular element
• Edgewound furnace-brazed fins
• .430 sheath diameter with outside fin diameter of 1-5/16" in straight lengths or factory formed "U" bend or "W" bend
• Choice of terminals (threaded stud and locknut, ceramic-to-metal seal, threaded terminal and mounting bushing, ceramic-to-metal seal and mounting bushings)
• 11 watts per square inch of surface
• 75 watts per square inch of sheath
• 240v or 480v

Benefits and Optional Features

• Monel and other sheath and fin materials available
• Special voltage/wattages available
• Custom bend formations
• Special terminations available
• l/4" and 5/16" fins available
• Other sheath diameters available: .250, .260, .315, .375, .490
• Copper brazed fins help to provide corrosion resistance and superior fin-to-sheath adhesion
• Cooler internal element temperatures

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